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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In one dimensional flow, the flow

Takes place in straight line
Is steady and uniform
Takes place in curve
Takes place in one direction

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Hydraulics and Fluid Mechanics in ME
Piezometer is used to measure

Very low pressures
Difference of pressure between two points
Atmospheric pressure
Pressure in pipe, channels etc

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Hydraulics and Fluid Mechanics in ME
The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which

Delivers unit discharge under unit speed
Delivers unit discharge under unit head
Develops unit power under unit head
Develops unit power under unit speed

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Hydraulics and Fluid Mechanics in ME
The property of fluid by virtue of which it offers resistance to shear is called

cohesion
surface tension
adhesion
viscosity

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Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Eight times
Double
Four times
Sixteen times

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Hydraulics and Fluid Mechanics in ME
The viscosity of water at 20°C is

One stoke
One centipoise
One poise
One centistoke

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